Cook lasagna noodles for 5 minutes, drain. In medium sized saucepan, melt the butter or margarine. Add flour and salt and pepper, cook until bubbly. Add the half and half and stir until blended well. Add the cheeses and continue stirring until cheese is melted and mixture thickens. Add the garlic and seafood, stir well. Remove from heat. In small baking pan, layer the noodles and seafood sauce. Top with cheese and breadcrumbs. Bake at 350 for 45 minutes.